re PR fortran/92898 (ICE in gfc_check_is_contiguous, at fortran/check.c:7157)

2019-12-12  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/92898
	* check.c (gfc_check_is_contiguous): Simplify check to handle
	arbitrary NULL() argument.

	PR fortran/92898
	* gfortran.dg/pr92898.f90: New test.

From-SVN: r279314

gcc/fortran/ChangeLog

+2019-12-12  Harald Anlauf  <anlauf@gmx.de>
+
+	PR fortran/92898
+	* check.c (gfc_check_is_contiguous): Simplify check to handle
+	arbitrary NULL() argument.
+
 2019-12-11  Jakub Jelinek  <jakub@redhat.com>
 
 	PR fortran/92899

gcc/fortran/check.c

@@ -7153,8 +7153,7 @@ gfc_check_ttynam_sub (gfc_expr *unit, gfc_expr *name)
 bool
 gfc_check_is_contiguous (gfc_expr *array)
 {
-  if (array->expr_type == EXPR_NULL
-      && array->symtree->n.sym->attr.pointer == 1)
+  if (array->expr_type == EXPR_NULL)
     {
       gfc_error ("Actual argument at %L of %qs intrinsic shall be an "
 		 "associated pointer", &array->where, gfc_current_intrinsic);

gcc/testsuite/ChangeLog

+2019-12-12  Harald Anlauf  <anlauf@gmx.de>
+
+	PR fortran/92898
+	* gfortran.dg/pr92898.f90: New test.
+
 2019-12-12  Sudakshina Das  <sudi.das@arm.com>
 
 	PR testsuite/92870

gcc/testsuite/gfortran.dg/pr92898.f90

+! { dg-do compile }
+! PR fortran/92898
+! Code contributed by Gerhard Steinmetz
+program p
+  print *, is_contiguous (null())     ! { dg-error "shall be an associated" }
+end